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ADSP-21160NCBZ-100 Datasheet(PDF) 9 Page - Analog Devices |
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ADSP-21160NCBZ-100 Datasheet(HTML) 9 Page - Analog Devices |
9 / 60 page ADSP-21160M/ADSP-21160N Rev. C | Page 9 of 60 | February 2013 Program Booting The internal memory of the ADSP-21160x can be booted at sys- tem power-up from an 8-bit EPROM, a host processor, or through one of the link ports. Selection of the boot source is controlled by the BMS (Boot Memory Select), EBOOT (EPROM Boot), and LBOOT (Link/Host Boot) pins. 32-bit and 16-bit host processors can be used for booting. Phase-Locked Loop The processor uses an on-chip PLL to generate the internal clock for the core. Ratios of 2:1, 3:1, and 4:1 between the core and CLKIN are supported. The CLK_CFG pins are used to select the ratio. The CLKIN rate is the rate at which the synchro- nous external port operates. Power Supplies The processor has separate power supply connections for the internal (VDDINT), external (VDDEXT), and analog (AVDD and AGND) power supplies. The internal and analog supplies must meet the VDDINT and AVDD requirement. The external supply must meet the 3.3 V requirement. All external supply pins must be connected to the same supply. The PLL filter, Figure 6, must be added for each ADSP-21160x in the system. VDDINT is the digital core supply. It is recom- mended that the capacitors be connected directly to AGND using short thick trace. It is recommended that the capacitors be placed as close to AVDD and AGND as possible. The connection from AGND to the (digital) ground plane should be made after the capacitors. The use of a thick trace for AGND is reasonable only because the PLL is a relatively low power circuit—it does not apply to any other ADSP-21160x GND connection. DEVELOPMENT TOOLS Analog Devices supports its processors with a complete line of software and hardware development tools, including integrated development environments (which include CrossCore ® Embed- ded Studio and/or VisualDSP++ ®), evaluation products, emulators, and a wide variety of software add-ins. Integrated Development Environments (IDEs) For C/C++ software writing and editing, code generation, and debug support, Analog Devices offers two IDEs. The newest IDE, CrossCore Embedded Studio, is based on the Eclipse TM framework. Supporting most Analog Devices proces- sor families, it is the IDE of choice for future processors, including multicore devices. CrossCore Embedded Studio seamlessly integrates available software add-ins to support real time operating systems, file systems, TCP/IP stacks, USB stacks, algorithmic software modules, and evaluation hardware board support packages. For more information visit www.analog.com/cces. The other Analog Devices IDE, VisualDSP++, supports proces- sor families introduced prior to the release of CrossCore Embedded Studio. This IDE includes the Analog Devices VDK real time operating system and an open source TCP/IP stack. For more information visit www.analog.com/visualdsp. Note that VisualDSP++ will not support future Analog Devices processors. EZ-KIT Lite Evaluation Board For processor evaluation, Analog Devices provides wide range of EZ-KIT Lite ® evaluation boards. Including the processor and key peripherals, the evaluation board also supports on-chip emulation capabilities and other evaluation and development features. Also available are various EZ-Extenders ®, which are daughter cards delivering additional specialized functionality, including audio and video processing. For more information visit www.analog.com and search on “ezkit” or “ezextender”. EZ-KIT Lite Evaluation Kits For a cost-effective way to learn more about developing with Analog Devices processors, Analog Devices offer a range of EZ- KIT Lite evaluation kits. Each evaluation kit includes an EZ-KIT Lite evaluation board, directions for downloading an evaluation version of the available IDE(s), a USB cable, and a power supply. The USB controller on the EZ-KIT Lite board connects to the USB port of the user’s PC, enabling the chosen IDE evaluation suite to emulate the on-board processor in-circuit. This permits the customer to download, execute, and debug programs for the EZ-KIT Lite system. It also supports in-circuit programming of the on-board Flash device to store user-specific boot code, enabling standalone operation. With the full version of Cross- Core Embedded Studio or VisualDSP++ installed (sold separately), engineers can develop software for supported EZ- KITs or any custom system utilizing supported Analog Devices processors. Software Add-Ins for CrossCore Embedded Studio Analog Devices offers software add-ins which seamlessly inte- grate with CrossCore Embedded Studio to extend its capabilities and reduce development time. Add-ins include board support packages for evaluation hardware, various middleware pack- ages, and algorithmic modules. Documentation, help, configuration dialogs, and coding examples present in these add-ins are viewable through the CrossCore Embedded Studio IDE once the add-in is installed. Board Support Packages for Evaluation Hardware Software support for the EZ-KIT Lite evaluation boards and EZ- Extender daughter cards is provided by software add-ins called Board Support Packages (BSPs). The BSPs contain the required drivers, pertinent release notes, and select example code for the given evaluation hardware. A download link for a specific BSP is Figure 6. Analog Power (AVDD) Filter Circuit 10 VDDINT 0.1 F 0.01 F AGND AVDD |
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